PU Power Wheelchair Caster Wheels
1. PU Solid Tire's Production Technology: SPIN-Cast Molding And Its Size Range
The process of spin-cast molding is used to insert foam fill into tires. This process helps create a dense, firm tread area while keeping the sidewall area flexible. The distribution of the foam fill is even and accurate ensuring excellent shock absorption. This helps provide the user with a smooth ride, every time.
For the foam filled tires, we can produce the following sizes:
6 inch, 7x 1 3/4, 200x50, 2.80/2.50-4,3.00-4, 4.10/3.50-4, 4.10/3.50-6, 3.00-8 etc. 4 inch to 16 inch diameter. If u have any special size requirement, we can also custom the wheels for u.

2. Polyurethane Tires' Tests
In our factory,we perform the following tests to ensure that all our products operate at good performance during their long service life:
Rolling Drum Test
Tension/Compression Force Analysis
Side Impact
Drop Testing
Static Load
Circle Track
Coefficient of Friction
Torque
Noise Test
Bump Test

3. PU Material Quality Control
(1). Purchasing:we purchase the chemical raw materials from the world's famous brands such as DOWS,Basf and Air Products.
(2). Incoming inspection: For every lot of incoming material,we random check its quality by cup foaming.
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